Device for operating window-sashes



UNITED STATES PATENT @EETGE JAMES R. BAKER, OF KENDALLVILLE, INDIANA.

DEVICE FOR OPERATING WINDOW-SASHES.

Specification forming part of Letters Patent No. 48,889, dated July 25, 1865.

l'o all whom it may concern:

Be it known that I, JAMES It. BAKER, ot' Kendallville,in the county otl Noble and State ot' India-na, have invented a new and Im proved Devicefor Operating Window-Sash( s; andldo hereby declare that the following is ai'ull, clear, and exact description thereof', reference being had to the accompanying drawings, making a part of this specification, in which- Figure l is an elevation of a window frame and sash having my invention applied to them. Fig. 2 shows both sashes thrown up. Fig. 3 shows both sashes down. Figs. 4, 5, and 6 are views ofthe edges of the sashes when the latter are adjusted in the several positions represented in Figs. 1, 2, and 3. Figs. 7, 8, and 9 show the'con trivances which adjust the pinionwheels that connect the sashes together.

Similar letters of reference indicate vorrespondin g parts in the several figures.

The object of my invention is to avoid the use ofcords and weights for balancing windowsashes, and to employ in lieu thereof one or more adjustable spur-wheels, which are applied to the window-frame, in conjunction with toothed racks, which are applied to the sashes, said wheels being so arranged that by a simple adjustment the sashes can be connected together and made tn counterbalance each other, or disconnected and operated independently of each other at pleasure, as will be hereinatter described.

To enable others skilled in the art to understand myY invention, I will describe its construction and operation.

In the accompanying drawings, A represents the window-frame; B, the lower sash, and O the upper sash, all of which parts may be constructed in the usual manner, my invention being applicable to window-sash which are in common use.

On each one of the vertical edges ofthe sash B is a rack, a, extending the full length of this edge, and on each vertical edge ot` the upper sash, C, is a short rack, b, which is recessed into the sash-rail and applied thereto so that its teeth will be opposite those of the rack on the sash B, as shown clearly in Figs. 4, 5, 6, and 9. The recesses c c in the edges of the upper sash-rail extend above their respective racks a short distance, for a purpose which will be presently described.

At the upper ends of the "ertical rails of the lower sash, B, are pinion `spur-wheels d d, which are supported by vertically-adjustable bearings c e, one of which is shown in Figs. 8 and9. These bearings projeetfrom plates D D, which are recessed into the jambs or stile-posts of the window-frame, ush with the inside sur-gVV faces thereof, and are formed on sliding blocks ff, which are adjusted vertically by means of slides g g, carrying linger-pieces g g on their outer ends.

The upper sash, C, is supported, when it is down as low as desired, upon stops h h, and when it rests upon these stops, as shown in Fig. 4, and pinion spur-wheels d d are thrown up to their fullest extent, these pinions do not engage with teeth of the racks b b, but can turn freely. When the sash O is in this position and the spur-wheels thrown up these wheels are opposite the recesses c c in the edges ofthe sash; consequently the sash B can be raised or lowered without moving the upper sash, O. rIhe sash B (or, rather, its racks) is always in gear with the spur-wheels, and at all times when the sashCis not resting upon the stop ML its racks are also in gear with the spur-wheels d d, and the weight of one sash is made to counterbalance the Weight of the other sash, and in this condition the sashes will remain in any position desired.

The plates D D are constructed with back rests, z' i, for guiding the racks on both sashes and keeping these racks in gear with their respective positions. Said plates are also constructed with curved guides D D', for receiving and guiding the lslides g g, which have their acting ends beveled, as shown in Figs. 7, and 9, for the purpose of elevating and depressing the bearings e e f f and with them the pinion spur-wheels d d.

The finger-pieces of the slides g g project through slots which are made through the window-strips, as shown in Figs. 4, 5, and 6.

Any suitable contrivance may be applied to the lower sash for holding it down. A simple spring-latch will answer the purpose.

rlhe operation of the sashes is as follows: the purpose of connecting it with the upper Raise Jthe sash B until the sash G rests upon the stops hh; then throw up the pinions dd into the recesses c c above the racks b b, and the sash B may be brought down again, so as to leave the window open at the top. Daise the sash B again a short distance, and then draw down the pinions a a, and by pulling down the sash B the sash C will be raised so as to close the window at' top and bottom; or raise the sash B when sash (l is upon the stops h 7L, and-then throw up the pinions a a, and the window can be closed at top and left open atthe bottom. By my invention the pinions dean be moved into or out of gear with the spurred racks b I) on the sash C at pleasure7 and at any time when the lower sash, B, is partially up and the sash C is down upon its stops h the two sashes can be connect ed together by dropping the pinions l d.

I prefer to employ a spring-stop which will enteh the lower sash, B, in raisingthis sash, for

sash, and determining the point Where the connection should be made, so that when the sash B is depressed both sashes will close their respective openings simultaneously.

Having thus described my invention, what I claim as new,and desire to secure by Letters Patent, is-

The employment ot` one or more verticallyadjustable spur-wheels applied to a windowframe, in combination with toothed racks applied to the sashes, said parts being so arranged that the sashes can be connected together and made to eounterbalanee each other, or the lower sash operated independently of the other, at pleasure, substantially as described.

JAMES R. BAKER.

Witnesses:

I. H. SMLTH. 0. L. WOODRUFF. 

